JP2003039799A - Stencil printing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stencil printing apparatus in which a plurality of master storing parts exist and a master to be used can be simply exchanged without making working efficiency become worse. SOLUTION: The stencil printing apparatus 1 has a plurality of the master storing parts 17 each storing a master roll 13a winding a master 13 into a roll-like shape, a plate processing part 6 which is common to a plurality of the masters 13 respectively stored in each of the master storing parts 17 and a plurality of master carrying paths 28 and 29 individually connecting each of the master storing parts 17 with the plate processing part 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stencil printing machine for printing by printing a plate-made master on a plate cylinder, and more particularly to a master storage section for storing the master.

[0002]

2. Description of the Related Art A rotatable plate cylinder formed by winding a plurality of layers of mesh screens of resin or metal mesh on a peripheral surface of a porous support plate which is a porous support cylinder, and a thermoplastic resin film (thickness). A thermoplastic resin film of a master using a master having a laminated structure in which Washi fibers or synthetic fibers or a mixture of Washi fibers and synthetic fibers are pasted together. A printing paper which is heated and perforated by a thermal head and wound around a plate cylinder, and is supplied from an ink supply unit provided inside the plate cylinder while supplying ink from a sheet feeding unit by a pressing unit such as a press roller. Printing is performed by continuously pressing the master plate on the outer peripheral surface of the plate cylinder to exude ink from the plate cylinder opening and master perforation and transfer it to the printing paper. Sensitive digital stencil printing apparatus is generally known to carry out. A master wound in a roll shape is generally known as a master used in this stencil printing machine, and this master roll is rotatably mounted in a master storage section of the stencil printing machine.

[0003]

However, in the conventional stencil printing apparatus, there is only one master storage section for storing the master roll in the apparatus main body, and the master transport path from the master storage section to the plate making section is also single. Therefore, when there is no master in the master storage unit and there is no spare master nearby, there is a problem in that the printing operation must be interrupted and work efficiency deteriorates.

Further, in stencil printing, there is a case where masters of different sizes are used by exchanging plate cylinders that can be wound, and in that case, there is a problem that the master roll must be exchanged each time. More recently, there has been a tendency to use high-quality masters having good perforation properties and ink permeability as compared with ordinary masters. In this case as well, it becomes necessary to replace the master roll.

The present invention solves the above problems and provides a stencil printing apparatus having a plurality of master storage portions and capable of easily replacing a master to be used without deteriorating work efficiency. is there.

[0006]

The invention according to claim 1 is
A stencil printing apparatus having a plate cylinder for selectively winding different masters, wherein a plurality of master storage units respectively storing master rolls obtained by winding the masters into rolls, and the master storage units are stored. Further, it is characterized in that it has a common plate making section for a plurality of the masters, and a plurality of master transport paths respectively connecting the respective master storage sections and the plate making section.

According to a second aspect of the present invention, in the stencil printing apparatus according to the first aspect, at least one of the master storage units is provided movably with respect to the printing apparatus main body, and the stencil printing apparatus is movable. The master storage section mounting section provided on the main body of the printing apparatus, to which the master storage section provided in the above is mounted, is provided with fixing means for restricting movement of the master storage section. .

According to a third aspect of the present invention, in the stencil printing apparatus according to the second aspect, each of the master storage sections further includes a master presence / absence detecting unit for detecting the presence or absence of the master, and a master roll for winding the master roll. Winding means,
It is characterized by further comprising a master pulling-out unit that pulls out the master from the master roll, and a master leading-edge detecting unit that detects a leading end of the master pulled out from the master roll.

According to a fourth aspect of the present invention, in the stencil printing apparatus according to the third aspect, the master roll winding means and the master pulling means are further provided based on signals from the master presence / absence detecting means and the master leading edge detecting means. While having a control means for controlling the operation of the fixing means,
It is characterized by further comprising master selecting means for selecting which one of the masters stored in each of the master storing units is to be used.

According to a fifth aspect of the present invention, in the stencil printing apparatus according to the fourth aspect, when the master to be used is selected from the masters by the master selecting means, the control means causes the master drawer to operate. It is characterized in that the operation of the means is controlled to send out the master from the master storage section toward the plate making section via the master transport path.

According to a sixth aspect of the present invention, in the stencil printing apparatus according to the fourth or fifth aspect, a master to be used is further selected from the masters by the master selecting means and is selected in the plate making section. Further, when there is a leading end of a master different from the master, the control means controls the operation of the master roll winding means to pull back the leading end from the plate making section.

According to a seventh aspect of the present invention, in the stencil printing apparatus according to the fourth, fifth or sixth aspect, the control means further stores the master storage when the master presence / absence detection means does not detect the master. The operation of the fixing means is controlled so as not to fix the portion.

According to an eighth aspect of the invention, in the stencil printing apparatus according to any one of the fourth to seventh aspects, the fixing means further comprises the master tip detecting means for detecting the tip of the master. The master storage portion is fixed at this time, and the master storage portion is released when the master tip detecting means does not detect the tip of the master.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a schematic front view of a main portion of a stencil printing machine adopting an embodiment of the present invention. In the figure, the stencil printing machine 1 has a plate cylinder 3 in a substantially central portion of a printing machine body 2. The plate cylinder 3 has a porous support plate (not shown) having an open hole portion and a non-open hole portion on the outer peripheral surface thereof, and is rotationally driven by the plate cylinder driving means 85 (see FIG. 5). A mesh screen (not shown) is wound around the opening of the porous support plate (not shown), and the non-opening portion of the porous support plate has a stage section 4 formed of a plane along one generatrix of the plate cylinder 3.
Is provided. An openable / closable clamper 5 is provided on the stage portion 4, and the clamper 5 is opened / closed by an opening / closing means (not shown).

A plate making section 6 is disposed on the right side of the plate cylinder 3. The plate making unit 6 has a thermal head 7, a platen roller 8, a cutting means 9, a master feed roller pair 10, a master feed roller pair 11, a master stock means 12, and the like.

Thermal head 7 having a plurality of heating elements
Is supported by a side plate (not shown) of the plate making section 6, and is biased by a biasing means (not shown) in a direction in which the heating element surface is pressed against the peripheral surface of the platen roller 8.
The platen roller 8 rotatably supported on the same side plate,
It is rotationally driven by a stepping motor (not shown). A one-way clutch (not shown) is incorporated in the platen roller 8 so that the rotational force from the platen roller 8 side is not transmitted to the stepping motor (not shown). The cutting means 9 provided on the left side of the thermal head 7 and the platen roller 8 has a known configuration in which the movable blade 9b is rotationally moved with respect to the fixed blade 9a. Further, near the upstream side of the platen roller 8 in the master transport direction, a master tip detection sensor 46 including a proximity sensor for detecting the tip of the master 13 sent from a master storage unit described later is provided.

A master feed roller pair 10 is arranged on the left side of the cutting means 9, and a master feed roller pair 11 is arranged on the further left side thereof. Each of the roller pairs 10 and 11 has a driving roller that is rotationally driven by a driving unit (not shown) and a driven roller that is pressed against the driving roller.

Below the platen roller 8, fixed blade 9a, and master feed roller pair 10, master stock means 12 is arranged. Master stock means 12
Has a housing shape having an opening between each pair of rollers 10 and 11, and a fan 12 is provided on one side facing the opening.
a. The fan 12a generates a negative pressure inside the master stock means 12 by the rotation, and works to draw the master 13 into the master stock means 12.

Two guide plates 14 for guiding the master 13 delivered by the master delivery roller pair 11 toward between the stage portion 4 and the clamper 5 are arranged on the left side of the master delivery roller pair 11. ing. In addition, between each roller pair 10, 11, a position indicated by a chain double-dashed line in FIG. 1 for guiding the master 13 sent from the master feed roller pair 10 toward the master feed roller pair 11 and each roller pair 10, Master 1 sandwiched between 11
A movable guide plate 15 that is selectively movable is provided at a position indicated by a solid line in FIG. 1 that does not hinder the stocking of the master 3 into the master stocking means 12 by the rotation of the master feed roller pair 10. The movable guide plate 15 is moved by guide plate moving means (not shown).

At the right side of the plate making section 6 and facing one side surface of the printing apparatus main body 2, two master storage section mounting sections 16 are provided. Each master storage section mounting section 16
It has a rail shape that holds a master storage unit 17 described later so that it can be pulled out, and is provided in parallel in the vertical direction of the stencil printing apparatus 1.

A portion of each master container mounting portion 16 near one side surface of the printing apparatus main body 2 serves as a fixing means for fixing the master container 17 when the master container mounting portion 16 is mounted. Each solenoid 18 is provided. Each solenoid 18 has a plunger 18a, and each plunger 18a occupies a position shown by a broken line in FIG. 1 whose upper surface does not project from the upper surface of the master container mounting portion 16 when the solenoid 18 is inoperative. The upper surface of each solenoid 18 is arranged to occupy the position shown by the chain double-dashed line in FIG.

The female connector 1 is provided on the side of each master storage section mounting section 16 opposite to the side on which the solenoid 18 is disposed.
9 are provided respectively. Each female connector 19 is a male connector 56 provided in a master storage section 17 described later.
It is connectable with the printer main body 2 and the master storage unit 17
And are electrically connected. In addition, each female connector 19
Is connected to the control means 45 described later, and the control means 4
Signals are exchanged with the 5s.

A master transport unit 20 is arranged between the plate making unit 6 and each master storage unit mounting unit 16. The master transport unit 20 has master guide plates 21, 22, 23, master transport roller pairs 24, 25, 26, a switching plate 27, and the like.

A master guide plate 21 having a substantially V shape.
Directs both ends to the master storage section mounting section 16 side,
The printing apparatus main body 2 in such a manner that the bent portion faces the plate making section 6 side.
It is fixed to the side plate (not shown). The master guide plates 22 and 23, which are substantially V-shaped, are formed in symmetrical shapes, and the master guide plates 21 and
Is fixed to a side plate (not shown) of the printing apparatus main body 2 so as to sandwich it. The master transport path 2 from the master storage unit 17 on the upper side in the facing portion of each master guide plate 21, 22.
8 is formed, and the master transport path 2 from the master storage unit 17 on the lower side in the facing portion of each master guide plate 21, 23.
9 is formed. In addition, each master guide plate 22, 2
A common master transport path 30 from each master storage unit 17 is formed in the facing portion of 3. Each master transport route 2
8, 29 are formed so that their lengths are equal to each other.

A master transport roller pair 24 comprising a drive roller 24a and a driven roller 24b pressed against the drive roller 24a.
Is arranged at an end of each master guide plate 21, 22 on the side of the master container mounting portion 16 and the upper master container 1
The master 13 pulled out from the No. 7 is sent to the master transport path 28. A master transport roller pair 25 including a driving roller 25a and a driven roller 25b pressed against the driving roller 25a.
Is arranged at the end of each master guide plate 21, 23 on the side of the master container mounting portion 16 and the lower master container 1
The master 13 pulled out from the No. 7 is sent to the master transport path 29. A master transport roller pair 26 including a drive roller 26a and a driven roller 26b pressed against the drive roller 26a.
Are arranged in the middle of the facing portions of the master guide plates 22 and 23, and send out the master 13 conveyed in the common master conveying path 30 toward the plate making section 6. A one-way clutch (not shown) is incorporated in each drive roller 24a, 25a, 26a.
The rotational force from the sides a and 26a is configured not to be transmitted to the respective driving means (not shown).

The switching plate 27 is swingably supported by a support shaft 27a arranged in the vicinity of the bent portion of the master guide plate 21, and its width is as shown in FIG. 2 (b). It is formed to be slightly larger than the width of the plates 21, 22, 23. As shown in FIG.
As shown in FIGS. 2A and 2B, a plunger 31a of a solenoid 31 attached to a side plate (not shown) of the printing apparatus main body 2 and a tension spring 32 having one end fixed to the side plate.
And the other end of the. With this configuration, the switching plate 27 connects the master transport path 28 and the common master transport path 30 to each other so that the leading end of the master 13 does not enter the master transport path 29 when the solenoid 31 operates. 1 and 2 (a) to be closed, the master conveyance path 29 communicates with the common master conveyance path 30 when the solenoid 31 is inoperative, and the leading end of the master 13 is the master conveyance path 28. The master transfer path 28 is closed so as not to enter inside.
2A and occupies the position shown by the chain double-dashed line.

Inside the printing apparatus main body 2, a paper feed unit (not shown) for stacking and feeding print paper, and the print paper fed from the paper feed unit is pressed against the outer peripheral surface of the plate cylinder 3. A pressing member (not shown) that is rocked by the rocking means 86 (see FIG. 5), a paper discharge portion (not shown) that conveys and stacks printed printing paper to the outside of the printing apparatus main body 2, and an outer peripheral surface of the plate cylinder 3. A plate discharge unit (not shown) for peeling a used master from the printer, an image reading unit (not shown) for reading a document image and storing the image information, and the like are provided.

An operation panel 33, a part of which is shown in FIG. The operation panel 33 has on its upper surface a plate making start key 34, a print start key 35, a test printing key 36, a clear / stop key 37, a continuous key 38, a ten key 39, and an enter key 4.
0, a mode clear key 41, a program key 42, a display unit (not shown), and the like, as well as which of the master storage units 17 attached to each master storage unit attachment unit 16 is selected. A master selection key 43 as a master selection unit is provided. Each time the master selection key 43 is pressed, the master to be used is switched, and in response to this, the display of the master display means 44 formed of LEDs provided above the master selection key 43 is switched. The master 1 shown here is the master from the upper master storage section 17, and the master 2 is the master from the lower master storage section 17. Further, a control means 45 for controlling the operation of the stencil printing apparatus 1 is provided inside the printing apparatus main body 2, and this configuration will be described later.

FIG. 4 shows the master storage portion supported by the master storage portion mounting portion 16 so as to be freely drawn out. In the figure, the master storage section 17 includes a storage section main body 47, a master holding member 48, a master pull-out means 49, a master roll winding means 50, a sensor 51 as a master presence / absence detection means, a sensor 52 as a master tip detection means, and the like. Have

The storage unit main body 47 is a box whose one side surface and a part of the upper surface are opened, and the lid 4 is attached to this opened portion.
7a is detachably attached. Of the storage unit main body 47,
Plunger 1 is provided on the lower surface located below the opened part.
8a is formed with a hole 47b into which the hole 4b can be inserted.
A reinforcing member 53 having a hole portion 53a into which the plunger 18a can be fitted is fixed to the inner surface of the lower surface on which the 7b is formed. In addition, inside the storage portion main body 47, the reinforcing member 5
Two guide plates 54, 55 for guiding the master 13 pulled out from the master roll 13a are fixed to the side surface of the storage unit main body 47 at both left and right sides thereof, which are substantially diagonally opposite to the mounting position of No. 3, respectively. And the storage unit main body 4
A male connector 56 that can be fitted to the female connector 19 is attached to the lower left portion of the connector 7. Each guide plate 54, 55
Is formed so that its width is wider than that of the master 13.

Reinforcing member 5 inside the storage portion main body 47
A pair of master holding members 48 are attached to the inside of both side surfaces located on the upper left of the three arrangement positions via brackets (not shown). The master holding member 48 made of an elastic material such as a resin having a substantially U shape is formed so that the diameter D of the curved surface portion 48a is substantially the same as the diameter of the core portion 13b of the master roll 13a. Each core 13b
Is rotatably supported. Further, the space L between the free ends of the master holding member 48 is formed to be slightly smaller than the diameter D.
8 is a core 13 by expanding each free end elastically.
b is configured to be removable.

A master pull-out means 49 is arranged at a position which is located on the upper left of the holding position of the master roll 13a and above the guide plate 54. The master pull-out means 49 includes a master pull-out roller 57 and an arm member 5.
8, a master pull-out motor 59, a tension spring 60 and the like. The master pull-out roller 57, which has a width wider than that of the master 13 and can reliably send out the master 13 by its rotation, is formed by a high friction resistance member such as rubber. Member 58
It is rotatably supported by. On the support shaft 57a,
The timing pulley 61 is integrally attached.

Each arm member 58 has a support shaft 57a rotatably supported at one end thereof, and the support shaft 6 rotatably supported at the other end thereof by the storage portion main body 47.
It is swingably supported around 2. One end of one arm member 58 is attached to one end of a tension spring 60, the other end of which is fixed to a member (not shown) in the storage portion main body 47, and the master pull-out roller 57 has its peripheral surface guided by a guide plate. It is always urged in the direction of pressing against 55.

A double timing pulley 63 is attached to the support shaft 62, and a timing belt 64 is stretched over one of them and the timing pulley 61. A master pull-out motor 59 having a one-way clutch 65 is arranged to the left of the support shaft 62, and a timing pulley 66 is attached to its output shaft 59a. A timing belt 67 is wound around the other side of the timing pulley 63 and the timing pulley 66. With this configuration, the rotational force of the master pull-out motor 59 causes the timing pulley 66, the timing belt 67, the timing pulley 63, the timing belt 64, It is transmitted to the master pull-out roller 57 via the timing pulley 61, and the master pull-out roller 57 is rotationally driven in the direction of the arrow in the figure.

A master roll take-up means 50 is arranged at the left side of the holding position of the master roll 13a and below the guide plate 55. The master roll winding means 50 is a master roll winding roller 6
8, an arm member 69, a master winding motor 70, a tension spring 71, a solenoid 72 and the like.

The master roll take-up roller 68 having a width substantially the same as the width of the master roll 13a and formed by a high friction resistance member such as rubber capable of reliably winding the master roll 13a by its rotation is Its support shaft 68
A is rotatably supported by a pair of arm members 69. A timing pulley 73 is integrally attached to the support shaft 68a.

Each arm member 69 rotatably supports a support shaft 68a at one end thereof, and the other end of the support shaft 7 rotatably supported by the storage portion main body 47.
4 is swingably supported. One end of a tension spring 71, the other end of which is fixed to a member (not shown) of the storage portion main body 47, is attached to one arm member 69 near the one end thereof, and the solenoid 7 is provided substantially at the center thereof.
The second plunger 72a is rotatably attached, and the master roll take-up roller 68 is held at the separated position where the peripheral surface thereof is separated from the master roll 13a as shown in FIG. The solenoid 72 occupies a position where its peripheral surface is pressed against the master roll 13a by the urging force of the tension spring 71 when the solenoid 72 is not operated. The solenoid 72 is swingably supported at its base end portion by the support shaft 76 on the storage portion main body 47.

A double timing pulley 77 is attached to the support shaft 74, and a timing belt 78 is stretched over one of them and the timing pulley 73. A master winding motor 70 having a one-way clutch 79 is arranged on the left side of the support shaft 74, and a timing pulley 80 is attached to its output shaft 70a. A timing belt 81 is stretched over the other side of the timing pulley 77 and the timing pulley 80. With this configuration, the rotational force of the master winding motor 70 causes the timing pulley 80, the timing belt 81, the timing pulley 77, and the timing belt 78. , Is transmitted to the master roll winding roller 68 via the timing pulley 73, and the master roll winding roller 68 is rotationally driven in the direction of the arrow in the figure.

At a position facing the master pull-out roller 57 via the guide plate 55, a reflection type sensor 51 attached to a fixing member (not shown) of the storage unit main body 47 is arranged. The sensor 51 detects whether or not the master 13 is present on the guide plate 55 through a hole (not shown) provided in the guide plate 55 from the difference in reflectance thereof,
Normally, one end of the master 13 is detected.
The sensor 51 also has a function of detecting a master end mark provided on one end of the master 13 near the end of the master roll 13a.

Below the guide plate 55, the storage section body 4
A reflection type sensor 52 attached to a fixing member (not shown) of the storage unit main body 47 is disposed near the master carry-out port 7. The sensor 52 detects whether or not the tip of the master 13 reaches a predetermined position on the guide plate 55 through a hole (not shown) provided on the guide plate 55 from the difference in reflectance.

The male connector 56 has the sensors 51,
52, the motors 59 and 70, and the solenoid 72 are connected to each other, and these members are used as the stencil printing machine 1.
Control unit 45 of the stencil printing apparatus 1 receiving power supply from the side
A control signal and a detection signal are exchanged with and the respective operations are controlled.

FIG. 5 is a control block diagram of the control means 45 used in the stencil printing machine 1. In the figure, the control means 45 includes a CPU 82, a ROM 83, and an RA inside.
A well-known microcomputer having M84,
It is provided inside the printing apparatus main body 2. Control means 45
Controls the operation of the plate cylinder driving means 85 and the swinging means 86, and also drives a sheet feeding section (not shown) to feed the sheet.
7, a paper discharge unit driving means 88 for driving a paper discharge unit (not shown),
Plate discharge unit driving means 89 for driving a plate discharging unit (not shown), and image reading unit driving unit 90 for driving an image reading unit (not shown)
The operation of the entire stencil printing machine 1 is controlled.

Further, the control means 45 controls each solenoid 1
8, each drive roller 24a, 25a, solenoid 31
In addition to controlling the operation of the master transport unit 20, when the master storage unit 17 is mounted on the master storage unit mounting unit 16, the sensors 51, 52 are connected via the connectors 19, 56.
The operation of each of the motors 59 and 70 and the solenoid 72 is also controlled based on the signal from the.

The operation of the stencil printing machine 1 will be described below based on the above configuration. First, a case will be described in which different types of masters 13 (normal quality master and high quality master, masters having different porous support thicknesses, etc.) are stored in the respective master storage units 17.

The operator pulls out the two master storage portions 17 to be used from each master storage portion mounting portion 16,
By removing the respective lids 47a, the respective master holding members 4
The different types of master rolls 13a are attached to the eight rolls. After mounting, the operator pulls out the leading end of the master 13 from the master roll 13a and manually lifts the master pull-out roller 57 to the position indicated by the chain double-dashed line in FIG.
The leading end of the drawn master 13 is inserted between the guide plates 54 and 55. After the insertion, the lifted master pull-out roller 57 is returned to the original position, and the leading end of the master 13 is held between the master pull-out roller 57 and the guide plate 55. As a result, the tip of the master 13 is set to the initial setting position 13A in FIG. Operator is each master storage unit 1
The lid 47a is reattached to the disk 7, and the initial setting of the master roll 13a in each master container 17 is completed.

After the master rolls 13a are initially set in the respective master storage units 17, the operator confirms that the power of the stencil printing machine 1 is turned on and confirms that the master storage unit 17 is turned on. Push into 16 and install. In this embodiment, the master storage section mounting section 16 on the upper side is equipped with the master storage section 17 in which the high-quality master 13 is stored, and the master storage section mounting section 1 on the lower side is mounted.
It is assumed that the master storage unit 17 in which the normal quality master 13 is stored is attached to the unit 6.

When the master storage section 17 is mounted on each master storage section mounting section 16 and the male connector 56 corresponding to each female connector 19 is connected, the control means 45 takes in a signal from the sensor 51. Then, the master storage unit 17 is controlled. The control means 45 controls the sensors 13 to 51 to operate the master 13 when the master storage units 17 are mounted.
If the detection signal is not output, it is determined that the master set is defective, and the display means (not shown) displays that fact.

When the control means 45 detects at least one signal from each sensor 51, the stencil printing machine 1 enters the plate making standby state. After that, when the operator sets a document to be read in an image reading unit (not shown), and the master making key 43 is used to select the master to be used and then the plate making start key 34 is pressed, the stencil printing machine 1 starts the plate making operation. To do. In this example, first, a case where a high quality master 13 is used will be described.

The operator presses the master selection key 43, confirms that the "master 1" LED of the master display means 44 is lit, and presses the plate making start key 34. When the plate making start key 34 is pressed, the control means 4
5 first confirms the detection signal of the master 13 from each sensor 52. In this embodiment, immediately after the master rolls 13a are set in the master storage units 17 and the leading ends of the masters 13 occupy the initial setting positions 13A, the sensors 52 do not detect the masters 13. In this case, first, the operation of unloading the master 13 from the selected upper master storage unit 17 is performed.

When the plate making start key 34 is pressed, a command is sent from the control means 45 and the master storage section 17 on the upper side is sent.
The master pull-out motor 59 therein is driven to rotate, the master pull-out roller 57 is driven to rotate in the direction of the arrow in FIG. 4, and the master 13 is sent out. Then, when the tip of the master 13 is detected by the upper sensor 52 and a detection signal is sent from the upper sensor 52 to the control means 45, the upper solenoid 18, which is the selected side, operates and the plunger 18a thereof. Is protruded, and the protruded plunger 18a is fitted into the hole 47b and the hole 53a, whereby the upper master storage portion 17 is fixed to the master storage portion mounting portion 16. At the same time, the solenoid 31 is actuated, the plunger 31a is attracted, and the switching plate 2
2 is positioned at the position indicated by the solid line in FIG. 2A, the upper solenoid 72 is actuated to suck the plunger 72a, and the peripheral surface of the master winding roller 68 is separated from the peripheral surface of the master roll 13a. The state shown in FIG. 4 is obtained. Further, the tip of the master 13 is the sensor 52 on the upper side.
When detected by, the drive rollers 24a and 26a are rotationally driven, and the master 13 pulled out from the master storage section 17 on the upper side is sent to the plate making section 6 through the master transport path 28 and the common master transport path 30.

When the detection signal of the master 13 is not output from the sensor 51 provided in the master storage section 17 selected by the master selection key 43, the stencil printing apparatus 1 does not perform the master unloading operation. Pause.
Further, after the master carry-out operation, the selected master storage unit 17
When the detection signal of the master 13 is not output from the sensor 52 provided therein, the stencil printing apparatus 1 stops the master carry-out operation and temporarily stops the image reading operation and the plate discharge operation. At this time, each solenoid 18, 31, 7
2 also does not operate, and the selected master storage portion 17 is not fixed to the master storage portion mounting portion 16 and can be removed.

When the plate making start key 34 is pressed, the detection signal of the master 13 is sent from the upper sensor 52 to the control means 45.
When the image data is output to, the original image is read by an image reading unit (not shown), and the used master is peeled off / discarded from the outer peripheral surface of the plate cylinder 3 by a plate discharging unit (not shown).

In the plate making section 6, the platen roller 8, the master feed roller pair 10, and the master feed roller pair 11 are each driven to rotate in the direction of the arrow in FIG. 1, and the guide plate moving means (not shown) is operated to move the movable guide. The plate 15 is positioned at the two-dot chain line position in FIG. When the tip of the master 13 conveyed by the master conveying roller pair 26 is detected by the master tip detecting sensor 46, a stepping motor (not shown) that rotationally drives the platen roller 8 measures the number of steps from this point, Figure out the tip position of 13.

When the control means 45 determines that the plate-making image forming area of the master 13 has reached the position facing the heating element of the thermal head 7 from the number of steps of a stepping motor (not shown), the heating element of the thermal head 7 is selectively operated. Then, heat is generated to form a perforated plate-making image on the surface of the thermoplastic resin film of the master 13. When the control means 45 determines that the leading end of the master 13 is sandwiched by the master delivery roller pair 11, the rotation of the master delivery roller pair 11 is stopped and the guide plate moving means (not shown) is activated to move the movable guide plate 15. Is moved to the solid line position in FIG.

When the movable guide plate 15 is moved, the fan 1
2a is rotationally driven. At this time as well, the master pull-out motor 59, the drive rollers 24a and 26a, the platen roller 8, and the master feed roller pair 10 continue to operate, and the plate-finished master 13 made by the thermal head 7 is the master stock means 12 Are sequentially sent inside. When the control unit 45 determines that the master 13 for one plate has been made from the number of steps of the stepping motor (not shown), the master pull-out motor 59, the drive rollers 24a and 26a, the platen roller 8, and the master feed roller pair 10 are formed. Is stopped, the movable blade 9b is rotated, and the master 1
3 is cut.

In parallel with the plate making operation described above, the plate cylinder 3 carries out the winding operation of the master 13 made on the plate cylinder 3 around the plate cylinder 3.
After completion of the plate discharge operation, the plate cylinder 3 is stopped at the plate supply position shown in FIG. 1, and the opening / closing means (not shown) is activated to open the clamper 5. When the release of the clamper 5 is confirmed, the master feed roller pair 11 is activated, and the master stock means 12
The master 13 that has been prepressed and is stored in the inside of the sheet is guided by each guide plate 14 and sent to the plate cylinder 3. When the leading end of the master 13 reaches a predetermined position between the stage 4 and the clamper 5, the clamper 5 is closed and the plate cylinder 3 is rotationally driven in the counterclockwise direction in FIG. 1 at a low speed. The peripheral speed of the plate cylinder 3 is 1 for the master feed roller.
It is set so as to be slightly faster than the transport speed of the master 13 by 1, and tension is applied to the master 13 during winding on the plate cylinder 3 to prevent wrinkles from occurring. When all the plate-making masters 13 stored in the master stock means 12 are wound around the plate cylinder 3, the operation of the plate cylinder 3 and the master feed roller pair 11 is stopped. The plate cylinder 3 around which the master 13 is wound stops again at the home position which is the plate feeding position.

When the plate making operation and the winding operation are completed and the plate cylinder 3 is stopped at the home position, one sheet of printing paper is fed from the paper feeding unit (not shown) and the plate cylinder 3 is moved at a low speed.
Is rotated counterclockwise. The printing paper (not shown) fed from the paper feeding portion is printed at a predetermined timing on the plate cylinder 3
And a press member (not shown), and the press member is pressed against the plate cylinder 3 to transfer the ink from the plate cylinder 3 to one surface thereof. As a result, the ink from the plate cylinder 3 permeates the porous support plate (not shown), the mesh screen (not shown), and the porous support of the master 13 to perform printing. The printing paper on which the ink has been transferred is peeled off from the outer peripheral surface of the plate cylinder 3 by a peeling claw (not shown), and is conveyed by a conveying member (not shown) provided in a paper discharge portion, and is provided outside the printing apparatus main body 2 The paper is ejected onto the paper ejection tray.

After printing, when the test printing key 36 is pressed after the printing conditions are set by the various keys on the operation panel 33, one sheet of printing paper is fed from the paper feeding unit (not shown) and the printing plate is printed. The cylinder 3 is rotationally driven in the clockwise direction in FIG. 1 at a peripheral speed according to the set printing speed. The fed printing paper is pressed against the outer peripheral surface of the plate cylinder 3 by a pressing member, and after the ink is transferred to one surface of the printing paper, the printing paper is peeled off from the plate cylinder 3 and is conveyed by a conveying member provided in the paper discharge section. Not ejected onto the output tray. The image is confirmed by this test printing, and if necessary, the conditions are set again, and the test printing is performed. After that, the number of prints is set with the ten-key 39 and the print start key 35 is pressed. The paper is continuously fed, and the plate cylinder 3 is rotationally driven at the rotational peripheral speed set in the counterclockwise direction in FIG. 1 to perform the printing operation. When the set number of prints is exhausted, the printing operation is completed and the plate cylinder 3 is returned to the home position again.

Subsequent to the above-mentioned printing operation, the operation when printing is performed using the normal quality master 13 will be described. At this time, in the lower master storage section 17 in which the master 13 of normal quality is stored, the tip of the master 13 is indicated by reference numeral 13 in FIG.
Although it is placed at the initial setting position shown by A, the high-quality master 13 pulled out from the upper master storage section 17 occupies the position cut by the cutting means 9 (the upper part of the fixed blade 9a). The master 13 cannot be sent from the lower master storage unit 17 to the plate making unit 6. Therefore, first, the master 13 pulled out from the upper master storage unit 17 is returned to the upper master storage unit 17, and then the master 13 is sent from the lower master storage unit 17 toward the plate making unit 6.

After confirming that the stencil printing apparatus 1 is in the plate making standby state, the operator sets the original on the image reading unit (not shown) and presses the master selection key 43 to press the "master 2" on the master display means 44. After confirming that the LED is lit, the plate making start key 34 is pressed.
When the plate-making start key 34 is pressed, the control means 45 confirms the detection signal of the master 13 from each sensor 52,
When the detection signal of the master 13 is not input from any of the master storage units 17, it is determined that the leading end of the master 13 in each master storage unit 17 occupies the initial set position 13A. In the same manner as described above, the carrying-out operation for sending out the master 13 from the selected lower master storage section 17 is performed. When the detection signal of the master 13 is input from the unselected master storage unit 17 as in the present embodiment, it is determined that the leading end of the unselected master 13 exists in the plate making unit 6. Then, the rewinding operation of retracting the leading end of the master 13 from the plate making unit 6 to the upper unselected master storage unit 17 is performed. When the detection signal of the master 13 is input from the selected lower master storage unit 17, the tip of the selected master 13 is already inside the plate making unit 6 (the upper part of the fixed blade 9a). It is determined that the master 13 is present, and the master 13 is conveyed by the platen roller 8 and the master feed roller pair 10, and the leading end thereof is nipped by the master feed roller pair 11.

Upper master storage section 17 not selected
When the detection signal of the master 13 is input from the sensor 52 provided in the control unit 45, the control unit 45 releases the operation of the solenoid 72 and operates the master winding motor 70. At this time, the solenoid 18 in the upper master storage portion mounting portion 16 is still in the operating state, and the plunger 18a is fitted in the hole 47b and the hole 53a.

When the operation of the solenoid 72 is released, the arm member 69 is supported by the urging force of the tension spring 71.
4, the peripheral surface of the master winding roller 68 is pressed against the peripheral surface of the master roll 13a with a predetermined pressing force. Further, the master winding roller 68 is driven to rotate in the direction of the arrow in FIG. 4 by the operation of the master winding motor 70, and the master roll 13a pressed against this is rotated clockwise around the core portion 13b in FIG. The pulled-out master 13 is gradually wound around the master roll 13a.

At the time of the above-mentioned winding, the master 13 whose front end is placed on the fixed blade 9a includes the thermal head 7, the platen roller 8 and each master transport roller pair 24, 2.
6 and the state in which it is nipped by the master pull-out roller 57, the guide plate 55, etc., the platen roller 8
Since the drive rollers 24a and 26a each have a one-way clutch (not shown) and the master pull-out motor 59 has a one-way clutch 65, the platen roller 8, each master transport roller pair 24, 26,
The master pull-out roller 57 and the master pull-out roller 57 are driven to rotate as the master 13 moves, so that the master 13 can be easily rewound.

When the master 13 is wound around the master roll 13a by the rotation of the master take-up roller 68, and the tip of the master 13 is retracted to the master roll 13a side from the upper sensor 52, the upper sensor 52 causes the control means 45 to move.
The detection signal of the master 13 sent to the device is lost. When the signal from the upper sensor 52 is cut off, the control means 45 stops the operation of the master winding motor 70. As a result, the master 13 is positioned at the storage position with its tip portion indicated by reference numeral 13B in FIG.

Master 13 from upper master storage unit 17
When the master 13 is rewound from the plate making section 6 and the detection signal of the master 13 sent from the upper sensor 52 to the control means 45 is interrupted, the operation of the upper solenoid 18 is released and the lower master storage section 17 is released. The master pull-out motor 59 therein is operated to carry out the operation of carrying out the master 13 from the lower master storage section 17.

By the rotation of the lower master pull-out motor 59, the lower master pull-out roller 57 is rotationally driven in the direction of the arrow in FIG. 4, and the master 13 is sent out from the lower master storage section 17. Then, when the tip of the lower master 13 is detected by the lower sensor 52 and a detection signal of the master 13 is sent from the lower sensor 52 to the control means 45, the lower solenoid 18 operates. The plunger 18a projects and the projecting plunger 18
The lower master storage part 17 is fixed to the master storage part mounting part 16 by fitting a into the hole part 47b and the hole part 53a. At the same time, the operation of the solenoid 31 is released, the urging force of the tension spring 32 positions the switching plate 27 at the position indicated by the chain double-dashed line in FIG. 2A, and the solenoid 72 on the lower side operates. The plunger 72a is sucked, and the peripheral surface of the master winding roller 68 is separated from the peripheral surface of the master roll 13a to be in the state shown in FIG.
Further, when the front end of the master 13 is detected by the lower sensor 52, the drive rollers 25a and 26a are rotationally driven, and the master 13 pulled out from the lower master storage section 17 has a master transport path 29 and a common master. It is sent to the plate making unit 6 through the carrying path 30.

From the lower sensor 51 to the master 13
If the detection signal is not output, the stencil printing apparatus 1 temporarily stops without performing the master unloading operation after the rewinding operation is completed. In addition, after the master carry-out operation, when the detection signal of the master 13 is not output from the lower sensor 52, the stencil printing machine 1 stops the master carry-out operation, and temporarily stops the image reading operation and the plate discharge operation. . At this time, the respective solenoids 18, 31, 72 are not operated, and the lower master storage section 17 is not fixed to the master storage section mounting section 16 and can be removed.

When the plate-making start key 34 is pressed, the detection signal of the master 13 is output from the lower sensor 52 to the control means 45.
When the image data is output toward, the original image is read by the image reading unit (not shown), and the used master is peeled off / discarded from the outer peripheral surface of the plate cylinder 3 by the plate discharging unit (not shown).

The master 13 sent to the plate making section 6 has its leading edge detected by the master leading edge detection sensor 46 as described above, and is transported by the platen roller 8 and the master feed roller pair 10. Then, a plate-making image is formed by the thermal head 7, and the leading end is nipped by the master feed roller pair 11. After that, the movable guide plate 15 is moved to the position shown by the solid line in FIG.
Is operated, and the master 13 which has been plate-made is sequentially fed into the master stock means 12. When the control means 45 determines that the master 13 for one plate is made, the master pull-out motor 59 and the drive rollers 24a, 2
The operations of 6a, the platen roller 8, and the master feed roller pair 10 are stopped, the movable blade 9b is rotationally moved, and the master 13 is cut.

In parallel with the plate making operation described above, the plate cylinder 3 carries out the winding operation of the plate-making master 13 around the plate cylinder 3.
After the plate discharging operation is completed, when the plate cylinder 3 is stopped at the plate feeding position and the clamper 5 is opened, the master feed roller pair 11 is operated, and the plate-made master 13 stored in the master stock means 12 is used as a plate. It is sent to the body 3. When the leading end of the master 13 reaches a predetermined position, the clamper 5 is closed and the plate cylinder 3 is rotationally driven in the counterclockwise direction in FIG. 1 at a low speed. When all the plate-making masters 13 stored in the master stock means 12 are wound around the plate cylinder 3, the plate cylinder 3 and the master feed roller pair 11 are wound.
Is stopped, and the plate cylinder 3 around which the master 13 is wound is again stopped at the home position which is the plate feeding position.

When the plate making operation and the winding operation are completed and the plate cylinder 3 is stopped at the home position, one sheet of printing paper is fed from the paper feeding unit (not shown) and the plate cylinder 3 is moved at a low speed.
It is driven to rotate in the counterclockwise direction and the printing is performed in the same manner as described above. After printing, when the test printing key 36 is pressed after the printing conditions are set by the various keys on the operation panel 33, one sheet of printing paper is fed from the paper feed unit (not shown), and the plate cylinder 3 moves. The test printing is performed by rotationally driving in the clockwise direction in FIG. 1 at the peripheral speed corresponding to the set printing speed. After the trial printing, when the number of sheets to be printed is set with the ten keys 39 and the print start key 35 is pressed, the printing paper is continuously fed from the paper feeding unit and the plate cylinder 3 is rotationally driven at the set rotational peripheral speed. Then, the printing operation is performed. When the set number of prints is exhausted, the printing operation is completed and the plate cylinder 3 is returned to the home position again.

In the above embodiment, each master storage section mounting section 1
Although the respective master storage portions 17 are configured to be freely drawn with respect to 6, the upper portion of the printing apparatus main body 2 is configured to be openable / closable, for example, and the master roll 13a is opened from this opening / closing portion to the upper master storage portion 17. If it is configured such that it can be attached and detached, only the lower master storage section 17 may be configured to be drawn out from the master storage section mounting section 16.

As described above, according to the present invention, different types of masters can be used for plate making and printing by simply switching the master storing section to be used, and there is no need to interrupt printing and replace the master roll. Work efficiency can be significantly improved. Further, since the master storage section is movable with respect to the printing apparatus main body, the master roll can be easily replaced, and the fixing means fixes the master storage section in use to the printing apparatus main body. It is possible to prevent the occurrence of problems such as a master jam, which is caused by erroneously moving the master storage section from the printing apparatus main body during use.

Next, a case where the master roll 13a is used up during plate making in the above embodiment will be described. When the master making start key 34 is pressed after the master to be used is selected by the master selection key 43, the control means 4
Reference numeral 5 confirms the detection signal of the master 13 from each sensor 52, and sends out the master 13 from the selected master storage unit 17 when the detection signal of the master 13 is not input from any of the master storage units 17. The carry-out operation is performed.
In addition, from the master storage unit 17 not selected, the master 1
When the detection signal of No. 3 is input, a rewinding operation for retracting the leading end of the master 13 from the plate-making unit 6 to the unselected master storage unit 17 is performed, and then the selected master storage unit The unloading operation of the master 13 from 17 is performed. When the detection signal of the master 13 is input from the selected master storage unit 17, the master 13 is conveyed by the platen roller 8 and the master feeding roller pair 10, and the leading end of the master 13 is fed by the master feeding roller pair 1.
It is sandwiched by 1.

When the plate making start key 34 is pressed, after the carry-out operation is performed after the carry-out operation or the rewinding operation,
Alternatively, in the state as it is, the master 13 is conveyed by the platen roller 8 and the master feed roller pair 10, and the leading end of the master 13 is nipped by the master feed roller pair 11 while a plate making image is formed by the thermal head 7. At this time, when the sensor 52 detects the leading end of the selected master 13 during the unloading operation or the unloading operation after the rewinding operation, the solenoid 18 on the selected side is activated and the solenoid 18 on the selected side is activated. Master storage unit 17
Is fixed to the master storage section mounting section 16,
The solenoid 31 is activated or deactivated to secure the master transport path from the selected master storage unit 17. Further, the solenoid 72 operates to separate the peripheral surface of the master winding roller 68 from the peripheral surface of the master roll 13a. When the leading end of the master 13 is nipped by the pair of master feed rollers 11, the movable guide plate 15 is moved to the position shown in FIG.
Is moved to the position indicated by the solid line, and the fan 12a is operated, and the master 13 thus mastered is fed into the master stock means 12.

When the sensor 51 for detecting the one end portion of the master 13 detects the master end mark during the plate making conveyance, this detection signal is sent to the control means 45. The control means 45 which has received the detection signal of the master end mark causes the RAM 84 to store that the signal has been detected, and even if the master storage section 17 is selected and the next plate making command is input after this plate making operation, Control to prohibit. It should be noted that this master end mark is provided at the position behind which at least one master for one plate remains, and even if the sensor 51 detects this immediately after the start of plate making operation, the master 13 is not printed during the plate making operation. Is configured so that it will not be used up.

After the plate making operation is completed, the plate making operation, the trial printing operation, and the printing operation are performed in the same manner as described above, and then the rewinding operation of the master 13 is performed in the selected master storage section 17. Then, when the rewinding operation of the master 13 is completed, the operation of the solenoid 18 is released, and the master storage section 17 can be detached from the master storage section mounting section 16.

When a new manuscript is set in the image reading section by the operator and the master 13 is used to select the used master storage section 17 to perform a new plate making operation, the master roll 13a is replaced. The operator pulls out the master storage unit 17 from the master storage unit mounting unit 16, removes the used master roll 13a after removing the lid 47a, removes the new master roll 13a in the same manner as described above, and removes the new master roll 13a. Attach to. After mounting the master roll 13a, the operator attaches the lid 47a to the master storage unit 17, and attaches the master storage unit 17 to the master storage unit mounting unit 16.
By this mounting, the male connector 56 is connected to the female connector 19, and the master detection signal from the sensor 51 is input to the control means 45.

The master storage unit 1 is attached to the master storage unit mounting unit 16.
When the master storage section 17 in which the master roll 13a is replaced is selected by the master selection key 43 after the No. 7 is mounted and the plate making start key 34 is pressed, the sensor 51
The control means 45 which receives the master detection signal from the RAM 8
4 confirms the contents stored, and if it is stored that the master roll end is detected, the master 13 is carried out from the master storage unit 17.

When the plate-making start key 34 is pressed, the master pull-out motor 59 on the selected side operates to pull out the master 13 from the master roll 13a. When the tip of the master 13 is detected by the sensor 52, the solenoid 18 is actuated to fix the selected master storage section 17 to the master storage section mounting section 16, and the master selected in the same manner as described above. The master transport path from the storage section 17 is secured, and the peripheral surface of the master winding roller 68 in the selected master storage section 17 is separated from the peripheral surface of the master roll 13a.

Almost at the same time as the operation of the solenoid 18, the drive roller 24a or the drive roller 25a and the drive roller 26a are rotationally driven, and the selected master storage section 17 is selected.
The master 13 pulled out from is sent to the plate making unit 6 through the master transport path 28, the master transport path 29, and the common master transport path 30. In the plate making unit 6, the platen roller 8 is rotationally driven in the direction of the arrow in FIG. 1, and when the leading end portion of the master 13 conveyed by the master conveying roller pair 26 is detected by the master leading end detection sensor 46, the platen roller 8 is rotationally driven. The stepping motor (not shown) measures the number of steps from this point, and the master 1
Grasp the tip position of 3.

When the control means 45 determines that the leading end of the master 13 has been conveyed to the predetermined position after passing through the cutting means 9 based on the number of steps of the stepping motor (not shown), the platen roller 8, the master conveyance roller pair 24 or the master conveyance roller. The operations of the pair 25, the master transport roller pair 26, and the master pull-out motor 59 are stopped, respectively, and the movable blade 9b is rotatably moved.
The tip of the is cut. The cut leading end of the master 13 falls downward and is stored in a master leading end tray (not shown) provided inside the printing apparatus main body 2. The master leading edge tray (not shown) is configured to be freely drawn out or attached to and detached from the printing apparatus main body 2 so that the operator can easily discard the cut leading edge of the master 13.

After cutting, the operation of the platen roller 8, the master transport roller pair 24 or the master transport roller pair 25, the master transport roller pair 26, and the master pull-out motor 59 is restarted, respectively, and the movable guide plate 15 is moved to two points in FIG. When the control unit 45 determines that the plate-making image forming area of the master 13 has reached the position facing the heating element of the thermal head 7 when positioned at the chain line position, the heating element of the thermal head 7 selectively generates heat and the master 13 A perforated plate-making image is formed on the surface of the thermoplastic resin film. Thereafter, the plate making operation is performed in the same manner as described above.

With the above configuration, when the sensor 51 detects the master 13 after the master roll end is detected, the tip of the master 13 is cut by the cutting means 9, so that a new master roll 13a is mounted. Can be automatically detected and the tips thereof can be aligned, and the occurrence of a master jam can be prevented. When the used master roll 13a is set after the master roll end is detected, a predetermined key on the operation panel 33 may be pressed to omit the cutting operation of the master front end portion. .

In the above embodiment, the upper master storage unit 17
The master storage units 17 on the lower side and the lower master storage unit 17 are configured to store different types of masters 13. However, if the master storage units of the same type are stored in both master storage units, one master storage unit 17 After the master 13 in the inside is used up, the master in the other master storage unit 17 is used,
While the other master storage unit 17 is being used, a new master 13 can be replenished in the one master 17, and the work efficiency can be improved.

Further, in the above-described embodiment, the two master storage section mounting portions 16 are arranged in parallel in the vertical direction of the printing apparatus main body 2, but there is a margin in the height direction of the printing apparatus main body. For example, the number of the master storage section mounting section 16 is 2
The number is not limited to three, and may be three or more.

[0087]

According to the present invention, different types of masters can be used for plate making and printing by simply switching the master storage unit to be used, and there is no need to interrupt the printing and replace the master rolls. Can be significantly improved. Further, if the same type of master 13 is stored in each master storage section, the master in one master storage section 17 is used up and then the master in the other master storage section 17 is used. Master storage section 17
The new master 13 can be replenished in the one master 17 during use, and the work efficiency can be improved.

Further, since the master storage section is movable with respect to the printing apparatus main body, the master roll can be easily replaced, and the fixing means fixes the master storage section in use to the printing apparatus main body. Therefore, it is possible to prevent the occurrence of a defect such as a master jam, which is caused by erroneously moving the master storage unit from the printing apparatus main body during use.

[Brief description of drawings]

FIG. 1 is a schematic front view of a main part of a stencil printing apparatus adopting an embodiment of the present invention.

2A and 2B are a front view and a top view illustrating a switching mechanism of a sheet conveying path used in an embodiment of the present invention.

FIG. 3 is a schematic view of an operation panel used in an embodiment of the present invention.

FIG. 4 is a schematic front view of a master storage unit used in an embodiment of the present invention.

FIG. 5 is a block diagram of control means used in an embodiment of the present invention.

[Explanation of symbols]

1 Stencil printer 2 Printer main body 3 plate body 6 Plate making department 13 Master 13a Master roll 16 Master storage section mounting section 17 Master Storage Department 18 Fixing means (solenoid) 28,29 Master transport route 43 master selection means (master selection key) 45 Control means 49 Master withdrawal means 50 Master roll winding means 51 Master presence / absence detection means (sensor) 52 Master tip detection means (sensor)

Claims (8)

[Claims] 1. A stencil printing apparatus having a plate cylinder for selectively winding different masters, wherein a plurality of master storage units for storing respective master rolls formed by winding the masters into rolls and the masters are provided. A stencil printing apparatus having a plate making unit common to a plurality of the masters stored in a storage unit and a plurality of master transport paths individually connecting the master storage unit and the plate making unit, respectively. .. 2. At least one of the master storage units
One is movably provided with respect to the printer body,
The master storage unit provided so as to be movable is attached,
2. The stencil printing apparatus according to claim 1, wherein the master storage section mounting section provided in the main body of the printing apparatus is provided with fixing means for restricting movement of the master storage section. 3. Each of the master storage sections includes a master presence / absence detecting means for detecting the presence / absence of the master, a master roll winding means for winding the master roll, and a master pulling means for pulling out the master from the master roll. 3. The stencil printing machine according to claim 2, further comprising: a master leading edge detecting unit that detects a leading edge of the master pulled out from the master roll. 4. A control means for controlling the operation of the master roll winding means, the master pulling means, and the fixing means based on signals from the master presence / absence detection means and the master front end detection means, and each master. 4. The stencil printing apparatus according to claim 3, further comprising a master selection unit that selects which of the masters stored in the storage unit is to be used. 5. When the master selecting means selects a master to be used from among the respective masters, the control means controls the operation of the master pulling means to move the master transport path from the master storing section. The master is sent out toward the plate making unit via the plate.
The stencil printing machine described. 6. The master selecting means selects a master to be used from among the respective masters, and when there is a leading end of a master different from the master selected in the plate making section, the control means controls the master. 6. The stencil printing machine according to claim 4, wherein the leading end portion is pulled back from the plate making section by controlling the operation of the roll winding means. 7. The control means controls the operation of the fixing means so as not to fix the master reservoir when the master presence / absence detecting means does not detect the master. Alternatively, the stencil printing apparatus according to claim 6. 8. The fixing means fixes the master storage portion when the master tip detecting means detects the tip of the master, and the master storing means when the master tip detecting means does not detect the tip of the master. 8. The stencil printing apparatus according to claim 4, wherein the fixing of the portion is released.